131     class const_iterator;  variable
132     inline const_iterator begin() const;
133     inline const_iterator end() const;
402   class const_iterator;  variable
403   inline const_iterator begin() const;
404   inline const_iterator end() const;
546 class Node::Inputs::const_iterator final {
554   const_iterator(const const_iterator& other) = default;
557   bool operator==(const const_iterator& other) const {
560   bool operator!=(const const_iterator& other) const {
563   const_iterator& operator++() {
567   const_iterator operator++(int);
568   const_iterator& operator+=(difference_type offset) {
572   const_iterator operator+(difference_type offset) const {
573     return const_iterator(input_ptr_ + offset);
575   difference_type operator-(const const_iterator& other) const {
582   explicit const_iterator(ZoneNodePtr const* input_ptr)  in const_iterator()  function
589 Node::Inputs::const_iterator Node::Inputs::begin() const {  in begin()
590   return const_iterator(input_root_);  in begin()
594 Node::Inputs::const_iterator Node::Inputs::end() const {  in end()
595   return const_iterator(input_root_ + count_);  in end()
642 class Node::Uses::const_iterator final {
651   bool operator==(const const_iterator& other) const {
654   bool operator!=(const const_iterator& other) const {
657   const_iterator& operator++() {
668   const_iterator operator++(int);
673   const_iterator() : current_(nullptr) {}  in const_iterator()  function
674   explicit const_iterator(Node* node)  in const_iterator()  function
690 Node::Uses::const_iterator Node::Uses::begin() const {  in begin()
691   return const_iterator(this->node_);  in begin()
695 Node::Uses::const_iterator Node::Uses::end() const { return const_iterator(); }  in end()